Where are the vacuum lines on a 2004 Pontiac gto?

On a 2004 Pontiac GTO, the vacuum lines are primarily located around the engine bay, connecting various components such as the intake manifold, brake booster, and emissions systems. You can typically find them on the driver's side near the intake manifold and along the firewall. Additionally, vacuum lines may be routed to the throttle body and other engine accessories. It's important to inspect these lines for any cracks or leaks, as they can affect engine performance.